Below are images of what I’m looking at. I want to know if there is a way to reduce or shorten these gaps for the mobile product page. Changing the padding does nothing but affect the desktop page.
Hello @RGchainmail
Could you please share your store URL or the page link ( with a pass if your store password is enabled ). I think I can give you the right solution
In the media of the product, there is 1 image that is too tall, affecting the height of the entire image list
You should adjust the photos accordingly and re-upload
Thanks, I had no idea one image could do that
I am glad that my recommendation is helpful to you 
.